Did you mean 2-3 clocks? It wasn't anything near 23 clocks on the Z80s I used.
I am fairly sure that there was a one byte prefix to specify the index register. Unfortunately I packed up my Z80 manual last night. If I remember I will check these after I move. -----Original Message----- From: Alan Cox [mailto:[EMAIL PROTECTED] Sent: Thursday, August 07, 2003 3:38 PM To: [EMAIL PROTECTED] Subject: Re: big and little endian On Iau, 2003-08-07 at 18:58, Fargusson.Alan wrote: > But if you use an index register instead of HL you could use an offset. Now the > 8080 didn't have index registers, so this may have been an issue on these. At a cost of 2 bytes and if I remember rightly going up to 23 clocks with the prefix